SparkFun Electronics

MCP79410-Days of week

MCP79410-Days of week

Posted: Mon Dec 04, 2017 2:23 pm

by Lucius

what is this used for, and how do I know what day of the week it will be @ random times. I've got my alarms working properly until I set it it to Trigger on '111'=Secs, mins, hour, DAY OF WEEK, Date, and month

Can someone please tell me why this "DATE OF WEEK" is useful if I already know the Date and Month? Short of programming in every sunday from now until 20 years from now, is there an easier way to keep track of which day I will need? I guess I could program it on my GUI and just transfer it when I'm setting the data time and alarms but that just opens the door for error. Cheers, Lucius

Re: MCP79410-Days of week

Posted: Wed Dec 06, 2017 7:49 am

by phalanx

When setting an alarm, DATE and MONTH do not account for what year you are in and the DAY OF WEEK of any given DATE will change year to year. For whatever reason, YEAR isn't part of the alarm options so you have to deal with the DAY OF WEEK field.